56f9227063
This patch rework "network delete" command following the rules in doc/source/command-errors.rst. In "network delete" command, there are multiple REST API calls, and we should make as many of them as possible. And log error for each one, give a better error message. Also return a non-zero exit code. Change-Id: I39ae087dd7bd08d049d513abfa6c5cab2bd13b2b Partial-Bug: #1556719